Home / 13,656.32-18,833.28-8,938.88

Finding the Fourth Proportional to 13,656.32, 18,833.28 and 8,938.88

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Solution

The fourth proportional to 13,656.32, 18,833.28 and 8,938.88 is: 12,327.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.32 : 18,833.28 = 8,938.88 : x
  2. Step 2: Convert to fraction form
    13,656.32/18,833.28 = 8,938.88/x
  3. Step 3: Cross multiply
    13,656.32x = 18,833.28 × 8,938.88
  4. Step 4: Simplify right side
    13,656.32x = 168,348,429.93
  5. Step 5: Solve for x
    x = 168,348,429.93/13,656.32
  6. Step 6: Final answer
    x = 12,327.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.